At Google I/O, we announced that Android Market is coming to Google TV. Today, we're announcing a preview of the Google TV Add-on for the Android SDK. With the upcoming OS update to Honeycomb, Google TV devices will be Android compatible. That means developers can build great new Android apps for TV, optimize existing mobile or tablet apps for TV, and distribute those apps through Android Market.

While the add-on does not contain all features of Google TV, it enables developers to emulate Google TV and build apps using standard Android SDK tools. It also provides new APIs for TV interaction, such as TV channel line-up. Google TV emulation is currently supported on Linux with KVM only, and we are working on support for other operating systems. We're very happy that through KVM we've been able to create a fast Android emulator for TV.

Depending on the design and use case, an existing Android app may work well on Google TV as is, or it may require fixes. With the add-on you can test your apps to determine if they would be a good fit for TV and whether any tweaks are required. We are also publishing UI guidelines to help you with topics like optimizing for D-pad navigation, presenting information for 10-foot viewing, designing apps that work well across devices, etc. The guidelines include information on how certain UI elements on Google TV differ from other Android devices.